
Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion 
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October 25th, 2015, 09:17 PM  #1 
Senior Member Joined: Oct 2013 From: Far far away Posts: 422 Thanks: 18  Complete the sequence
What is the missing number in the following sequence? 234;_____; 23,481; 234,819; 2,348,200 My guess is 2347...we have to add the last two digits. Kindly tell me the rationale behind the sequence. Thanks 
October 26th, 2015, 05:21 AM  #2 
Math Team Joined: Apr 2010 Posts: 2,780 Thanks: 361 
Seems like a good guess to me. A formula would be: a(0) = 234. for n > 0, a(n+1) = 10*a(n) + [floor(a(n)/10) mod 10] + [a(n) mod 10]. 

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